TY - RPRT TI - Circular of the Bureau of Standards no. 241 2nd edition: United States government master specification for packing, asbestos sheet, compressed PY - 1927 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS CIRC 241e2 DO - 10.6028/NBS.CIRC.241e2 ER -